package com.leyou.item.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.leyou.common.exception.LyException;
import com.leyou.item.dto.SpecParamDTO;
import com.leyou.item.entiey.SpecParam;
import com.leyou.item.mapper.SpecParamMapper;
import com.leyou.item.service.SpecParamService;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class SpecParamServiceImpl extends ServiceImpl<SpecParamMapper, SpecParam> implements SpecParamService {

    //查询规格参数集合
    @Override
    public List<SpecParamDTO> querySpecParams(Long categoryId, Long groupId, Boolean searching) {
        // 健壮性判断
        if(categoryId == null && groupId == null){
            // 条件不能都为空
            throw new LyException(400, "查询条件不能为空！");
        }

        //拼接条件 查找规格参数集合
        List<SpecParam> specParamList = this.query()
                .eq(categoryId != null, "category_id", categoryId)
                .eq(groupId != null, "group_id", groupId)
                .eq(searching != null,"searching", searching).list();

        //转为DTO集合对象
        List<SpecParamDTO> specParamDTOList = SpecParamDTO.convertEntityList(specParamList);

        return specParamDTOList;
    }


}
